196 lines
6.8 KiB
C
196 lines
6.8 KiB
C
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/* This file has been prepared for Doxygen automatic documentation generation.*/
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/*! \file usb_task.h *********************************************************************
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*
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* \brief
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* This file manages the USB task either device/host or both.
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*
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* The USB task selects the correct USB task (usb_device task or usb_host task
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* to be executed depending on the current mode available.
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*
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* According to USB_DEVICE_FEATURE and USB_HOST_FEATURE value (located in conf_usb.h file)
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* The usb_task can be configured to support USB DEVICE mode or USB Host mode or both
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* for a dual role device application.
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*
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* This module also contains the general USB interrupt subroutine. This subroutine is used
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* to detect asynchronous USB events.
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*
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* Note:
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* - The usb_task belongs to the scheduler, the usb_device_task and usb_host do not, they are called
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* from the general usb_task
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* - See conf_usb.h file for more details about the configuration of this module
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*
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* \addtogroup usbstick
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*
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* \author
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* Atmel Corporation: http://www.atmel.com \n
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* Support email: avr@atmel.com
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*
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******************************************************************************/
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/* Copyright (c) 2008 ATMEL Corporation
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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* Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in
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the documentation and/or other materials provided with the
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distribution.
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* Neither the name of the copyright holders nor the names of
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contributors may be used to endorse or promote products derived
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from this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _USB_TASK_H_
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#define _USB_TASK_H_
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/**
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\ingroup usbstick
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\defgroup usbdriver USB Driver
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@{
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*/
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//_____ I N C L U D E S ____________________________________________________
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//_____ M A C R O S ________________________________________________________
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//! \name USB Events
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//! @{
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//! Send event
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#define Usb_send_event(x) (g_usb_event |= (1<<x))
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//! Ack event processed
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#define Usb_ack_event(x) (g_usb_event &= ~(1<<x))
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//! Clear all events
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#define Usb_clear_all_event() (g_usb_event = 0)
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//! Check for USB event
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#define Is_usb_event(x) ((g_usb_event & (1<<x)) ? TRUE : FALSE)
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//! Check for USB event NOT occuring
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#define Is_not_usb_event(x) ((g_usb_event & (1<<x)) ? FALSE: TRUE)
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//! Check if USB is device
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#define Is_usb_device() (g_usb_mode==USB_MODE_DEVICE ? TRUE : FALSE)
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//! USB Event: USB plugged
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#define EVT_USB_POWERED 1
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//! USB Event: USB un-plugged
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#define EVT_USB_UNPOWERED 2
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//! USB Event: USB in device
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#define EVT_USB_DEVICE_FUNCTION 3
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//! USB Event: USB in host
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#define EVT_USB_HOST_FUNCTION 4
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//! USB Event: USB suspend
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#define EVT_USB_SUSPEND 5
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//! USB Event: USB wake up
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#define EVT_USB_WAKE_UP 6
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//! USB Event: USB resume
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#define EVT_USB_RESUME 7
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//! USB Event: USB reset
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#define EVT_USB_RESET 8
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//! USB Event: USB setup received
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#define EVT_USB_SETUP_RX 9
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//! @}
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//! \name Standard requests defines
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//! @{
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#define GET_STATUS 0x00
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#define GET_DEVICE 0x01
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#define CLEAR_FEATURE 0x01 //!< see FEATURES below
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#define GET_STRING 0x03
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#define SET_FEATURE 0x03 //!< see FEATURES below
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#define SET_ADDRESS 0x05
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#define GET_DESCRIPTOR 0x06
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#define SET_DESCRIPTOR 0x07
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#define GET_CONFIGURATION 0x08
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#define SET_CONFIGURATION 0x09
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#define GET_INTERFACE 0x0A
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#define SET_INTERFACE 0x0B
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#define SYNCH_FRAME 0x0C
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#define GET_DEVICE_DESCRIPTOR 1
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#define GET_CONFIGURATION_DESCRIPTOR 4
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#define REQUEST_DEVICE_STATUS 0x80
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#define REQUEST_INTERFACE_STATUS 0x81
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#define REQUEST_ENDPOINT_STATUS 0x82
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#define ZERO_TYPE 0x00
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#define INTERFACE_TYPE 0x01
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#define ENDPOINT_TYPE 0x02
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// Descriptor Types
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#define DEVICE_DESCRIPTOR 0x01
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#define CONFIGURATION_DESCRIPTOR 0x02
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#define STRING_DESCRIPTOR 0x03
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#define INTERFACE_DESCRIPTOR 0x04
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#define ENDPOINT_DESCRIPTOR 0x05
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#define DEVICE_QUALIFIER_DESCRIPTOR 0x06
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#define OTHER_SPEED_CONFIGURATION_DESCRIPTOR 0x07
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// Standard Features
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#define FEATURE_DEVICE_REMOTE_WAKEUP 0x01
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#define FEATURE_ENDPOINT_HALT 0x00
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#define TEST_J 0x01
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#define TEST_K 0x02
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#define TEST_SEO_NAK 0x03
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#define TEST_PACKET 0x04
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#define TEST_FORCE_ENABLE 0x05
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// Device Status
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#define BUS_POWERED 0
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#define SELF_POWERED 1
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//! @}
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#define USB_MODE_UNDEFINED 0x00
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#define USB_MODE_HOST 0x01
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#define USB_MODE_DEVICE 0x02
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typedef enum {
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rndis_only,
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rndis_debug,
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mass_storage
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} usb_mode_t;
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//_____ D E C L A R A T I O N S ____________________________________________
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extern volatile uint16_t g_usb_event;
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extern uint8_t g_usb_mode;
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PROCESS_NAME(usb_process);
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extern volatile uint8_t private_sof_counter;
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void usb_start_device (void);
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void usb_device_task (void);
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//! @}
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#endif /* _USB_TASK_H_ */
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/** @} */
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